The outbreak began on Wednesday, when 40 children were absent, most of them with stomach flu. Even more fell ill on Thursday.
By then, around 90 children were sick, and we contacted the infectious disease control department. They thought we should clean the school thoroughly, the school's principal, Jenny Wahlfridsson, told HN.
She says there is always an outbreak of vomiting illness before Christmas.
But I have never experienced anything like this.








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